Assessing Consequences of the Final Failure of a Power Transformer Using Fuzzy Logic and Expert Criteria

This document presents an innovative tool for assessing the consequence of the final failure a power transformer, this metric considers aspects as: power quality, overload of other equipment, safety, reliability of the system and the environmental & social impact. For this evaluation, existing standards as well experience and industry practices are integrated. For this regard, a fuzzy inference system was proposed, the membership functions and the rules for integrating each input are based on a survey applied over a set of Ecuadorian power transformers; this study considers technical, economic and social characteristics of the impact of the final failure. The resulting membership functions, and the rules are presented.